Optimized quasisymmetric stellarators are consistent with the Garren–Boozer construction
Abstract
The majority of quasisymmetric stellarators to date have been designed by numerically optimizing the plasma boundary shape to minimize symmetry-breaking Fourier modes of the magnetic field strength B. At high aspect ratio, a faster approach is to directly construct the plasma shape from the equations of quasisymmetry near the magnetic axis derived by Garren and Boozer [Phys Fluids B 3, 2805 (1991)]. Here we demonstrate that the core shape and rotational transform of many optimization-based configurations can be accurately described by this direct-construction approach. This consistency supports use of the near-axis construction as an accurate analytical model for modern stellarator configurations.
- Publication Date:
- Research Org.:
- Univ. of Maryland, College Park, MD (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); Simons Foundation
- OSTI Identifier:
- 1597702
- Grant/Contract Number:
- FG02-93ER54197
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 61; Journal Issue: 7; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Landreman, Matt. Optimized quasisymmetric stellarators are consistent with the Garren–Boozer construction. United States: N. p., 2019.
Web. doi:10.1088/1361-6587/ab19f6.
Landreman, Matt. Optimized quasisymmetric stellarators are consistent with the Garren–Boozer construction. United States. https://doi.org/10.1088/1361-6587/ab19f6
Landreman, Matt. Thu .
"Optimized quasisymmetric stellarators are consistent with the Garren–Boozer construction". United States. https://doi.org/10.1088/1361-6587/ab19f6. https://www.osti.gov/servlets/purl/1597702.
@article{osti_1597702,
title = {Optimized quasisymmetric stellarators are consistent with the Garren–Boozer construction},
author = {Landreman, Matt},
abstractNote = {The majority of quasisymmetric stellarators to date have been designed by numerically optimizing the plasma boundary shape to minimize symmetry-breaking Fourier modes of the magnetic field strength B. At high aspect ratio, a faster approach is to directly construct the plasma shape from the equations of quasisymmetry near the magnetic axis derived by Garren and Boozer [Phys Fluids B 3, 2805 (1991)]. Here we demonstrate that the core shape and rotational transform of many optimization-based configurations can be accurately described by this direct-construction approach. This consistency supports use of the near-axis construction as an accurate analytical model for modern stellarator configurations.},
doi = {10.1088/1361-6587/ab19f6},
journal = {Plasma Physics and Controlled Fusion},
number = 7,
volume = 61,
place = {United States},
year = {2019},
month = {5}
}
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Works referencing / citing this record:
Constructing stellarators with quasisymmetry to high order
journal, November 2019
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Near-axis expansion of stellarator equilibrium at arbitrary order in the distance to the axis
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